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Astigmatism correction in direct ophthalmoscopy
Author(s): Ala Hssain; Eva Acosta; Justo Arines
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Paper Abstract

We present experimental data using an artificial eye in order to show how much astigmatism significantly reduces the quality of the retinal images obtained with a panoptic direct ophthalmoscope with two different magnifications (no magnification and a 6x magnifier. We used an astigmatism correcting device built by our own to see the improvement in the images in case we correct the astigmatism with this device. The images were registered with an Ipad pro. The results show that small amounts of astigmatism do not distort significantly the images with low magnification but once we introduce magnification to the system or increase the magnitude of astigmatism its correction is important, for obtaining good quality images.

Paper Details

Date Published: 3 October 2019
PDF: 4 pages
Proc. SPIE 11207, Fourth International Conference on Applications of Optics and Photonics, 112071Y (3 October 2019); doi: 10.1117/12.2527476
Show Author Affiliations
Ala Hssain, Halabja Univ. (Iraq)
Univ. de Santiago de Compostela (Spain)
Eva Acosta, Univ. de Santiago de Compostela (Spain)
Justo Arines, Univ. de Santiago de Compostela (Spain)


Published in SPIE Proceedings Vol. 11207:
Fourth International Conference on Applications of Optics and Photonics
Manuel Filipe P. C. M. Martins Costa, Editor(s)

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